Ultrafast electron transfer in the nanocomposite of the graphene oxide–Au nanocluster with graphene oxide as a donor

Abstract

Novel electron transfer results in PL quenching in both graphene oxide–Au25 and graphene oxide–Au10 nanocomposites.

Fluorescent gold nanoclusters based photoelectrochemical sensors for detection of H2O2 and glucose

“…Kogo determined the HOMO and LUMO potentials of GSH-AuNCs by photoelectrochemical analysis (Kogo et al, 2010(Kogo et al, , 2012Sakai and Tatsuma, 2010). Wen confirmed the band gap of BSA-AuNCs again by studying the electron transfers between AuNCs and GO (Wen et al, 2014). The LUMO and HOMO positions of different AuNCs can be deduced based on the results of these studies.…”

“…Each BSA-AuNC, DHLA-AuNC GSH-AuNC and MUA-AuNC contained 25, 28, 15 and 10 Au atoms, respectively. Based on the band gap results obtained for nanoclusters composed of different numbers of atoms (Wen et al, 2014), potentials of À 500 mV to 500 mV, at which the Fermi level is between each HOMO and LUMO, were applied in all measurements to maintain a stable photocurrent and allow for suitable comparison.…”

Homogeneous phase separation in polymer:fullerene bulk heterojunction organic solar cells

“…Time-resolved PL is an effective technique to analyze the structural changes via investigation of the fluorescence quenching, as reported in our previous work [32][33][34]. Hedley et al [6] reported that no PTB7 fluorescence is observed even at a timescale as short as 2 ps with a selective excitation wavelength of 670 nm.…”

Label-free fluorimetric detection of CEA using carbon dots derived from tomato juice

“…Currently, various types of nanomaterials have been employed to provide fluorescence response and construct ultrasensitive biosensors with the development of nanoscience and nanotechnology (Min et al, 2011;Zhang, 2012). Fluorescent nanomaterials, especially quantum dots (QDs) and noble metal nanoclusters (NCs), have been appearing as powerful and sensitive probes and attracted numerous attentions (Yang and Lian, 2014;Wen et al, 2014). Likewise, carbon dots (CDs) appear as a new class of 'zero-dimensional' fluorescent nanomaterials in the carbon family (Baker and Baker, 2010), and exhibit enormous prospects across the scientific disciplines owing to their ease of synthesis, abundance of raw material in nature, excellent chemical and colloidal stability, low photobleaching, scarcely optical blinking, favorable biocompatibility and superior water dispersibility (Hola et al, 2014;Song et al, 2014;Yang et al, 2013;Dong et al, 2012;Song et al, 2012).…”